Measurement of the Z/γ∗ boson transverse momentum distribution in pp collisions at √s= 7 TeV with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, M. Abolins, Mogens Dam, Jørgen Beck Hansen, Jørn Dines Hansen, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Lotte Ansgaard Thomsen, Sascha Mehlhase, Morten Dam Jørgensen, Almut Maria Pingel, Gorm Aske Gram Krohn Galster, Ask Emil Løvschall-JensenAlejandro Alonso Diaz, James William Monk, Lars Egholm Pedersen, Graig Wiglesworth

116 Citationer (Scopus)

Abstract

This paper describes a measurement of the Z/γ* boson transverse momentum spectrum using ATLAS proton-proton collision data at a centre-of-mass energy of (Formula presented) TeV at the LHC. The measurement is performed in the Z/γ* → e+e and Z/γ* → μ+μ channels, using data corresponding to an integrated luminosity of 4.7 fb−1. Normalized differential cross sections as a function of the Z/γ* boson transverse momentum are measured for transverse momenta up to 800 GeV. The measurement is performed inclusively for Z/γ* rapidities up to 2.4, as well as in three rapidity bins. The channel results are combined, compared to perturbative and resummed QCD calculations and used to constrain the parton shower parameters of Monte Carlo generators.

OriginalsprogEngelsk
Artikelnummer1409
TidsskriftJournal of High Energy Physics (Online)
Vol/bind2014
Udgave nummer145
Antal sider55
ISSN1126-6708
StatusUdgivet - sep. 2014

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